Displacive cubic. -->. tetragonal transformation in ZrO/sub 2/ alloys

Journal Article · Sun Mar 01 04:00:00 EST 1987 · Acta Metall.; (United States)

DOI:https://doi.org/10.1016/0001-6160(87)90189-1· OSTI ID:5650632

Heuer, A H; Chaim, R; Lanteri, V

A displacive but nonmartensitic cubic (c) to tetragonal (t) phase transformation is ubiquitous in ZrO/sub 2/-Y/sub 2/O/sub 3/ alloys containing from -- 4 to -- 13 wt%Y/sub 2/O/sub 3/. The microstructures of the transformed phase are characterized by the presence of anti-phase domain boundaries (APB's) similar to those present in ordered alloys and in fine-grained polycrystals, by )101) twins. The latter are interpreted as mechanical deformation twins which relieve the strains arising from the tetragonality of the product phase and the molar volume change accompanying transformation.

• Research Organization: Dept. of Metallurgy and Materials Science, Case Western Reserve Univ., Cleveland, OH 44106
• OSTI ID: 5650632
• Journal Information: Acta Metall.; (United States), Journal Name: Acta Metall.; (United States) Vol. 35:3; ISSN AMETA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
CHALCOGENIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
CRYSTALS
CUBIC LATTICES
DEFORMATION
GRAIN BOUNDARIES
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
POLYCRYSTALS
STRUCTURAL CHEMICAL ANALYSIS
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES